Key extension module for telephone



FIG. 1 is a top view of the key extension module according to the design;

FIG. 2 is a front view of the key extension module of FIG. 1;

FIG. 3 is a right side view of the key extension module of FIG. 1;

FIG. 4 is a rear view of the key extension module of FIG. 1; and,

FIG. 5 is a top, front and left side perspective view of the key extension module of FIG. 1.

The broken lines showing portions of the key extension module for telephone are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

The ornamental design of the key extension module for telephone, as shown and described. 